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Studies on Chemical Composition and Antioxidant Activity of Rudbeckia triloba

The paper describes the physicochemical studies made on the decorative plant, Rudbeckia triloba (Asteraceae). For this purpose, essential oil, infusion, decoction, and hydroalcoholic macerate obtained from different aerial parts of Rudbeckia triloba were analyzed. The main phytochemical constituents...

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Autores principales: Moldovan, Zenovia, Buleandră, Mihaela, Oprea, Eliza, Mînea, Zamfirica
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Hindawi 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5723952/
https://www.ncbi.nlm.nih.gov/pubmed/29279786
http://dx.doi.org/10.1155/2017/3407312
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author Moldovan, Zenovia
Buleandră, Mihaela
Oprea, Eliza
Mînea, Zamfirica
author_facet Moldovan, Zenovia
Buleandră, Mihaela
Oprea, Eliza
Mînea, Zamfirica
author_sort Moldovan, Zenovia
collection PubMed
description The paper describes the physicochemical studies made on the decorative plant, Rudbeckia triloba (Asteraceae). For this purpose, essential oil, infusion, decoction, and hydroalcoholic macerate obtained from different aerial parts of Rudbeckia triloba were analyzed. The main phytochemical constituents identified by GC-MS analysis were found to be α-pinene (in dried leaves (46.0%) and flowers (40.1%)) and β-phellandrene (in essential oil of dried inflorescences (26.09%)). The Folin–Ciocalteu and quercetin assays revealed different values of total phenolic and flavonoid contents of petals, leaves, and seeds as a function of the solvent used and extraction procedure. The hydroalcoholic macerate of petals was found to present the maximum phenolic and flavonoid contents (130.29 ± 5.58 mg gallic acid equivalent/g dry vegetable material and 30.72 ± 1.35 mg quercetin equivalent/g dry vegetable material, resp.) and also exhibits the lower value of EC50 (0.32% (v/v)), obtained by applying the DPPH· assay. Comparing the extraction methods applied, the maceration was found to be the most effective for phenolic compounds, most likely due to the solvent (70% ethanol). The use of water-alcohol mixture leads to an improvement of the extraction yield of phenolic compounds (including those with higher molecular weights) than by using water as extractive solvent, in the case of infusions and decocts.
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spelling pubmed-57239522017-12-26 Studies on Chemical Composition and Antioxidant Activity of Rudbeckia triloba Moldovan, Zenovia Buleandră, Mihaela Oprea, Eliza Mînea, Zamfirica J Anal Methods Chem Research Article The paper describes the physicochemical studies made on the decorative plant, Rudbeckia triloba (Asteraceae). For this purpose, essential oil, infusion, decoction, and hydroalcoholic macerate obtained from different aerial parts of Rudbeckia triloba were analyzed. The main phytochemical constituents identified by GC-MS analysis were found to be α-pinene (in dried leaves (46.0%) and flowers (40.1%)) and β-phellandrene (in essential oil of dried inflorescences (26.09%)). The Folin–Ciocalteu and quercetin assays revealed different values of total phenolic and flavonoid contents of petals, leaves, and seeds as a function of the solvent used and extraction procedure. The hydroalcoholic macerate of petals was found to present the maximum phenolic and flavonoid contents (130.29 ± 5.58 mg gallic acid equivalent/g dry vegetable material and 30.72 ± 1.35 mg quercetin equivalent/g dry vegetable material, resp.) and also exhibits the lower value of EC50 (0.32% (v/v)), obtained by applying the DPPH· assay. Comparing the extraction methods applied, the maceration was found to be the most effective for phenolic compounds, most likely due to the solvent (70% ethanol). The use of water-alcohol mixture leads to an improvement of the extraction yield of phenolic compounds (including those with higher molecular weights) than by using water as extractive solvent, in the case of infusions and decocts. Hindawi 2017 2017-11-27 /pmc/articles/PMC5723952/ /pubmed/29279786 http://dx.doi.org/10.1155/2017/3407312 Text en Copyright © 2017 Zenovia Moldovan et al. https://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Moldovan, Zenovia
Buleandră, Mihaela
Oprea, Eliza
Mînea, Zamfirica
Studies on Chemical Composition and Antioxidant Activity of Rudbeckia triloba
title Studies on Chemical Composition and Antioxidant Activity of Rudbeckia triloba
title_full Studies on Chemical Composition and Antioxidant Activity of Rudbeckia triloba
title_fullStr Studies on Chemical Composition and Antioxidant Activity of Rudbeckia triloba
title_full_unstemmed Studies on Chemical Composition and Antioxidant Activity of Rudbeckia triloba
title_short Studies on Chemical Composition and Antioxidant Activity of Rudbeckia triloba
title_sort studies on chemical composition and antioxidant activity of rudbeckia triloba
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5723952/
https://www.ncbi.nlm.nih.gov/pubmed/29279786
http://dx.doi.org/10.1155/2017/3407312
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